Posted by: Matthew Haney (mhaney@usgs.gov), Wed Nov 19, 2025 21:55 (2155 UTC)
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"Significant" located earthquakes for November 18, 2025 (picking by Scott Stihler):

Iliamna: 7; Augustine: 2; Cleveland: 2; Katmai: 2; Mageik: 2; Okmok: 2; Shishaldin: 2; Veniaminof: 2; Martin: 1; Snowy: 1; Spurr: 1; Trident: 1

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Iliamna (7 EQs):
1 EQ ~3 km E of the summit
ML -0.3; Z = 0.8 km

1 EQ ~2 km NNE of the summit
ML -0.6; Z = -0.0 km

1 EQ ~2 km S of the summit
ML -0.6; Z = 1.2 km

1 EQ ~4 km N of the summit
ML -0.7; Z = 3.5 km

1 EQ ~1 km NNE of the summit
ML -0.7; Z = -0.9 km

1 EQ ~2 km SW of the summit
ML -0.8; Z = -0.2 km

1 EQ ~2 km S of the summit
ML -0.8; Z = 1.5 km


Augustine (2 EQs):
1 EQ ~1 km E of the summit
ML -0.3; Z = 3.4 km

1 EQ ~3 km WSW of the summit
ML -0.5; Z = 0.9 km


Cleveland (2 EQs):
1 EQ ~5 km ESE of the summit
ML 2.1; Z = 3.0 km

1 EQ ~5 km ESE of the summit
ML 1.4; Z = 5.5 km


Katmai (2 EQs):
1 EQ ~2 km NW of the summit
ML 0.0; Z = 3.1 km

1 EQ ~2 km WNW of the summit
ML -0.2; Z = 2.6 km


Mageik (2 EQs):
1 EQ ~2 km SW of the summit
ML -0.3; Z = 1.4 km

1 EQ ~1 km SW of the summit
ML -0.4; Z = 1.8 km


Okmok (2 EQs):
1 EQ ~10 km S of the center of caldera
ML 1.0; Z = 7.5 km

1 EQ ~9 km S of the center of caldera
ML 0.6; Z = 7.7 km


Shishaldin (2 EQs):
1 low frequency EQ ~2 km SSW of the summit
ML 1.3; Z = 4.1 km

1 low frequency EQ ~2 km WSW of the summit
ML 0.9; Z = 4.2 km


Veniaminof (2 EQs):
1 deep low frequency EQ ~4 km W of the intracaldera cone
ML 1.4; Z = 22.4 km

1 low frequency EQ ~9 km NE of the intracaldera cone
ML 0.2; Z = 4.5 km


Martin:
1 EQ ~0 km NW of the summit
ML -0.2; Z = 1.7 km


Snowy:
1 EQ ~6 km NE of the summit
ML 0.1; Z = 5.5 km


Spurr:
1 deep low frequency EQ ~5 km ESE of the summit
ML -0.1; Z = 26.6 km


Trident:
1 EQ ~1 km W of the summit
ML -0.9; Z = 4.1 km

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